We're dividing 900856 by 66 
We want to figure out the number of times 900856 can be divided by 66.

On to step 1:
The number 66 fits into 9 0 times, leaving a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 66

Moving on to step 2:
66 goes into 90 1 times with a remainder of 24.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 66 from 90 leaves us with 24.
Append the next digit (0) from the dividend to 24 and continue with: 240 / 66

Advancing to step 3:
When dividing 240 by 66, we get 3 with a remainder of 42.
The next digit of our result is 3. 
Result so far: 13.0
The remainder is 42 after subtracting 198 from 240.
Take the next digit (8) from the dividend and append it to 42, then repeat: 428 / 66

Advancing to step 4:
When dividing 428 by 66, we get 6 with a remainder of 32.
Write down 6 as next digit of the result. 
Result so far: 136.0
Subtract 396 from 428 to get 32.
Take the next digit (5) from the dividend and append it to 32, then repeat: 325 / 66

Going ahead to step 5:
325 divided by 66 is 4 with a remainder of 61.
Write down 4 as next digit of the result. 
Result so far: 1364.0
Subtracting 264 from 325 leaves us with 61.
Grab the next digit (6) from the dividend, add it to 61, then carry on: 616 / 66

Let's proceed to step 6:
The number 66 fits into 616 9 times, leaving a remainder of 22.
Write down 9 as next digit of the result. 
Result so far: 13649.0
If we subtract 594 from 616, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 7:
The number 66 fits into 220 3 times, leaving a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 13649.3
Deduct 198 from 220 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 8:
66 goes into 220 3 times with a remainder of 22.
The number 3 becomes the next digit in our result. 
Result so far: 13649.33
If we subtract 198 from 220, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Our division results in 13649.33 with a remaining 0.022.